Constant speed winder



Sept. 24, 1935 E. P. SEARlNG 2,015,196

CONSTANT SPEED WINDER Filed April 12, 1934 INVENTOR, Eugene 2586411013,

r & ATTQRNEY Patented Septi '24, 1935 PATENT OFFICE 2,015,196 7 CONSTANT SPEED "WINDER Eugene P. Searing, HawthbrnefN. J. i Application April 12, 1934, Serial No. 720168 "7 Claims.

This invention'rela'tes'to mechanisms for winding yarn and other 7 material. 7

1 According to the invention, given a rotary driving element and a rotary driven element on which to form the wound mass each rotatable around an axisjpenetrating the same, the driven element is movable transversely of its axis relatively to, and has anend face in f contact with, the driving element. He'noe-it' is possible to vary thes'peed of the driven element relatively to'that of'the driving element, to wit ,b'y moving the driven element transversely of its axis.

-mass, being greatest at thelast.

So much being assumed, my invention 'contemplates tha't the driven element be normally urged in the direction which I its axis "approaches the driving element and the inclusion in themechanism ofnieans, actuated by the growing imassgto move the driven element'i'n thoppo'site direction; and, further, the inclusion of the position to which it is "so moved whereby the following result-willensue:

V Inan ordinary machine for winding bobbins, spools and the like the driving element engages :-a, WhiIl :01 the like rest On the Spindle portion of the'core-element including the bobbin, etc.

Assuming the axial speed of the driving ele'in'eiit and core-element to be constant'the peripheral speed of the wound mass increases as said mass increases in diameter. Hence the maxi1'num speed safely possible so far as the yarn is concerned is only at the last; besides "the tension 7 and degree' -o'fstr'etch f the yarn oluring' the winding vary as does the compactness of the But a'ccoirling to myinvention it is possible to preserve the peripheral speed'of the mass substantially constant from start' to finish of the winding, with consequent constancy, of tension, stretch and compactness of winding, not to mention a substantialincrease in'output'.

I have illustrated the invention herein in reference to a yarn winding machine, the drawing ShOWif-lg, Z j s n Fig.. 1 a side elevation of-a winding unit certain" parts app ar V constructed 'in accordance'with the inventiom' section;

- In: Fig.2 a front elevation of such unit, cer'-' tain parts also appearing in section; and

In Fig. 3 a front elevation, partly in section, of a modified form of the driving and driven elements. 1 r j r f The driven element here'coinprise's the-spool I and'the spindle 2 onto which the spool is slipped and. which it snugly fits and whichhasa whirl 7 3fas't thereon. An end face of said element may be takenas either side of the whirl which, according to the example shown is preferably formed with a-bevel-a-teach'such face, 01' so that the whirl tapers toward its periphery (The term end face wherever used herein with reference to either'thedriven or driving elernent means'a cireiinifereritial face facing lengthwise of the axisgor 'genrallysc, of such element.)

The driving element i'na-ybe taken as either or 10 bdfih ef -a pair of rotary disks fi'which in this example receive the whirl between'them and re-' sp'e'ctively Cehtat with its said faces, the disks i desirably having "adjoining circumferential 'angfe's l i'w have the actiial contact with said faces and are-beveled at thesame angle as they are.

The driving element is rotative around'a fixed. axis whereas the driven element is journale'd so as to be movfable'transversely of its axis, or in a path in which the contact between its end face and the driver inay be at difiere'nt points from the 'pe'ripheryoi the driven element; in the ex- 'e,'-'-'as will appear, this contact is between an end face of "the driver as well as an end face or the "driven-element, the two elements having their axes parallel.

'Sui 'Ddr-tin'g structure for saidelements is afforded as renews: I'n uprights 5 is arranged a horiz'iintal shaft 6 "and carried by the uprights is a parrot horizontalbars 7 parallel with the shaft.

The driver is centrally penetrated by the shaft Jwlii'ch quipped with means normally to hold the driver against the corresponding end "face of the whir -6r the driven "element andihere comprisinga cu ped collar 8 and a spring 9 inter posed between the collar and corre'sponding driver and housed in the iorrner, saidcollar being movable along the shaft to vary the tension of the spring and when so moved to be held to the'shaft by a set-screw. iii. In the present example the shaft is a 'rotative part of ment is aise twinned; the bearings for the spindie are thrust-bearings l3,o ne of which is fixed in the carrier and the other.retractivea'gainst a spr ng M sqthat the driven element may be removed for doffiiig and rep1ac'ed. By moving the driven element relatively to the driver r0 being adapted shift the point of contact as explained it is possible to vary the peripheral speed of the driven element. In the present example the driven element is arranged above the driving element (with its axis horizontal) and tends to fall by gravity toward the same, or in the direction to shift the said contact away from the periphery of the driven element. An object of the invention being to cause reduction of the peripheral speed of the driven element automatically as the winding of the yarn or other material thereon progresses, means is provided for moving the driven element contrary to the direction in which it is thus normally urged and also for holding it in the position to which it is thus moved, the first of these means being actuated by the mass of windings on the driven element which in the present example (where yarn a, is wound) are laid on the spool of the driven element in layers by traversing the yarn lengthwise of the spool axis in the usual way, as by a suitably reciprocated yarn-guide rail l5 having a yarn guide i6. Thus:

In an arm ll depending from the bars I is journaled a cam l8 whose axis is parallel with those of the driving and driven elements and which is here an eccentric opposed to the spool barrel and hence the windings formed thereon, so that when the diameter of' the wound mass increases sufiiciently the cam will be wiped thereby and rotated, moving the driven element away from the driver or in the direction to shift the mentioned contact between the two elements toward the periphery of the driven element and so reduce the peripheral speed of the latter. Said arm is extended forward (to the right in Fig. l) and has a lateral blade IS with an upper sharp edge and forming a detent.

The carrier I2 has a depending arm 20 (thus giving the carrier the character of a lever) and to this is freely pivoted the forwardly projecting ratchet-bar 21 which rests on the detent by gravity and has its under side saw-toothed, the abrupt sides of the teeth facing rearwardly. Any other clutching device than a ratchet bar having a prolonged clutching portion to be engaged by the detent will respond. 7

At the start of the winding the barrel of the spool will be clear of the cam, being held in that position by the detent engaging the ratchet-bar at one of the teeth thereof near the right in Fig. 1. As the winding proceeds and the wound mass increases in diameter the periphery of the mass will wipe the cam and rotate it, so that, the cam will lift the driven element and its carrier, the latter being then held in its new'p'osition' (with the wound mass now again clear of the cam) by the engagement of the detent with another tooth of the ratchet-bar which, as the carrier'was lifted, moved somewhat forward. This operation will be repeated intermittently as the mass continues to increase in diameter. In consequence the peripheral speed of the wound mass will remain constant from start to finish of the winding, so that there may be a substantial gain in production and the condition of the yarn as to tension' and stretch or distension and the compactness of the mass will remain substantially constant throughout the winding.

In Fig. 3 there is asingle driving element 22 it fixed on the shaftfi and two whirls 23 on the spindle 2, the whirls being between two collars 24 movable along the shaft toward or from each other to vary the tension of the springs 25 interposed between them and the whirls and being secured to the shaft when so moved by the set-- screws 26.

The reason for the bevelling in either example shown is obviously to obtain an efficient driving contact, not possible if the faces of the two ele- 5 ments were planes perpendicular to their axes.

Since the bevels of the whirl are a factor in retaining the driven element in its new position when lifted the parts |92 l are not indispensable.

I do not wish to be limited to any detail hereinbefore set forth and not specified in the appended claims.

. Having thus fully described my invention what I claim is:

1. Winding mechanism comprising a rotary driving element and a rotary driven element on which to form the wound mass each of which elements is rotatable around an axis penetrating such element and the driving element having contact with an end face of the driven element, one element being movable to vary the distance between the axis of the driven element and the driving element, means, actuated by the growing wound mass, to move the movable element, means to retain the movable element when so moved in the position to which it is moved, and supporting structure for said elements and means.

2. Winding mechanism comprising a rotary driving element and a rotary driven element on which to form the wound mass each of which elements is rotatable around an axis penetrating such element and the driving element having contact with an end face of the driven element, one element being normally urged in a direction to vary the distance between the axis of the driven element and the driving element, means actuated by the growing wound mass, to move in the opposite direction the movable element, and means to retain the movable element in the position to which it is moved, and supporting structure for said elements and means.

3. Winding mechanism comprising a rotary driving element and a rotary driven element on which to form the wound mass each of which elements is rotatable around an axis penetrating such element and the driving element having contact with an end face of the driven element, one element/being normally urged in a direction to vary the distance between the axis of the driven element and the driving element, means actuated having means engaged by said clutching portion to hold the clutch-device in the position to which it is moved. Y

4. Winding mechanism comprising a rotary driving element and a rotary driven element on which to ,form the wound mass each rotatable around an axis penetrating such element and one element being movable transversely of its axis relatively to, and having an end face in contact with, the other element and being normally urged in the direction in which its axis approaches the latter element, means, actuated by the growing wound mass, to move in the opposite direction the element which is so movable, means thereupon to retain the element so moved in the position to which it is moved, and supporting structure for said elements and means. 7 j

5. Winding' mechanism comprising a rotary driving element and a rotary driven element on which to form the wound mass, each rotatable around an axis penetrating such element and one element being movable transversely of its axis relatively to, and having an end face in contact with, the other element and being normally urged in the direction in whichits axis approaches the latter element, means, actuated by the growing Wound mass, to move in the opposite direction the element which is so movable, a clutch-device connected with the element so moved to move therewith and having a clutching portion, and supporting structure for said element and means having means engaged by said clutching portion to hold the same in the position to which it is so moved.

driving element and a rotary driven element on which to form the wound mass each rotatable around an axis penetrating such element and one being movable to vary but normally urged to reduce the distance between the driving element and the axis of the driven element and the driving elementhaving contact with the end face of the driven element, means, actuated by the growing wound mass, to move the movable element in the direction contrary to that in which it is so urged, and supporting structure for said elements and means.

7. Winding mechanism comprising a rotary 7 driving element and a rotary driven element on which to form the wound mass each rotatable around an axis penetrating such element and one being movable to vary but normally urged to reduce the distance between the driving element and the axis of the driven element and the one element having contact with the end face of the 1 other element, means, actuated by the growing 6. Winding mechanism comprising a rotary Wound mass, to move the movable element which 15 is so movable in the direction contrary to that in which it is so urged, meansthereupon to retain the movable element in the position to which it is thus moved, and supporting structure for said elements and means.

EUGENE P. SEARING. 

